Blizzard executive vice president of game design Rob Pardo says Microsoft's controversial new operating system also isn't great for his company, which makes games like Diablo III and World of Warcraft.

"Nice interview with Gabe Newell - 'I think Windows 8 is a catastrophe for everyone in the PC space* - not awesome for Blizzard either," Pardo wrote on Twitter earlier this week.

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Stardock also denounced Windows 8 in an editorial on this site earlier this year. That's three of the biggest companies in PC gaming all down on the operating system, which will be out this October. Not a great sign for Microsoft.